Sash-lock.



A. SUNDE.

SASH LOCK.

APPLICATION FlLED MAR. H- l9l6.

Patented June 13,1916.

INVENTOR. Q4/4561 Junie BY 4%; A 4% ATTORNEYS. 4

THE COLUMBIA PLANOGRAPH co., WASHINGTON, n. c.

arisen sowtonor SIOUX o 'iY, Iowa.

SASH-LOCK. i

iaseeei.

Patented June 13, 1916.

Application fiIed March 11, 1916. Serial No. 83,632. e I

To all whom it may concern Be it known that I, AKsEL SUNDE, a citizen of the United States, and a resident of Sioux City, in the county of Noodbury and State of Iowa, have invented certain new and useful Improvements in SaslrLocks, of which the following is a specification.

The present invention relates to window sash-locks.

The iiwention has for its primary object the production of an improved lock, particularly designed for use upon vertically movable window sash, and adapted to lock the lower sash against vertical movement from any point.

A further object of the invention is the production of an improved sash-lock, inexpensive in manufacture, readily attachable and highly efficient in operation.

With these and other objects in view the invention, consisting in the construction, combination and novel arrangement of parts, will be fully understood from the following description, reference being had to the accompanying drawings, which form a part of this application and in which like characters of reference indicate corresponding parts throughout the several views, of which,

Figure 1 is a transverse section of apair of window sash, equipped with the preferred embodiment of my invention; Fig. 2 is an enlarged side elevation of the lock, the flexible link being cut away; 3 is a front elevation of the same; Fig. 41- is a vertical section of the same; and Fig. 5 is a plan of Fig. 3.

Although I have illustrated and hereinafter described the preferred embodiment of the invention, I would not be understood. as being limited to the specific structure chosen for illustration, for various alterations and modifications in the details of construction and arrangement of parts may, be made without departing from the spirit and scope of the invention as defined in the appended claims.

The invention contemplates, broadly, a

lock including a suitable case adapted to be mounted on the lower sash, and having rotatably mounted thereinv a retractable springroller, upon which is wound a flexible tape, the free end of which is adapted to be secured to the'upper sash and detent shaped in general contour and having a base, 12, adapted to be secured to the side cross member. The case incloses a roller, 13, mounted on aXis,14,journaled in bearing openings, 15,'in opposite sides of thecase. The roller isprovided on one side with an annular shoulder, 15, upon which is wound a spiral spring, 17, one end of which is secured tothe case, as at 18. Upon the roller, 13, is wound a perforated steel tape, 19, one

end of which is fast to the roller. The tape passes freely through a slot, 20, in the lower portion of the case and its lower end is riveted or otherwise secured, as at, 21, to a flanged plate, 22, mounted on the upper side of the lower cross member of the'up'per sash. Upon the side of the case is mounted a detent operable to engage'the tape and preferably comprising a bell-crank lever, 23, fulcrumed at, 2 1. The depending arm of the lever is off-set below the case, as at 25, and provided with a stud, 26, adapted to enter the perforations of the tape. The other end of the lever may be providedwith a lateral knob, 27, for conveniently manipulating the lever. The weight of the lever tends to hold the stud, 2G, in engagement with the tape. The detent may be held out of engagement with the tape by moving the lever to the position shown in dotted lines in Fig. 2 and s )rin 'in it over a stud 28 on the side of the I case, which prevents downward movement of the lever. Upon one end of the flanged plate, 22, may be pivoted a hook-arm, 29, the l hook of which is engageable (when the lower sashis closed) with a head, 30, on the base of the case, thereby preventing opening of either sash. It is now evident that the stud,

26, "prevents unwinding of the tape and thereby prevents upward movement of the lower sash; yet the said sashmay be readily lowered when in o ened oosition as the Having thus described my invention,

what I claim as new and desire to secnreby Letters Patent, is, p r

1. A'lock for a. window having an upper and a vertically movable lower sash, (30111 prising a oaseadapted to be mounted on the top of the lower sash, and having a slot in its under side, a retracting roller rotatably inelosed by the case, a perforated tape wound on the roller and passing through said slot, the free end of the tape being adapted to be secured to the lower part of the upper sash, and a lever fulcruined on the caseand having adepending arm extending below the ease and pro- Copie sof'this patent may be obtained for AKSEL SUNDE.

five cents each, by addressing the Commissioner 0! Patents, Washington, D. 0.? 

